Hugo version switcher and installer tested with Linux and OS X 64 bit releases from https://github.com/gohugoio/hugo/releases

hvm.sh

#!/usr/bin/env bash

# the directory that contains this script
base=$( cd "$(dirname "${BASH_SOURCE[0]}")" ; pwd -P )

# -----------------------
# Hugo Version Manager
# Author: Jim Frenette
# May 21, 2019

# EXAMPLE USAGE
# ./hvm.sh install 0.54.0
#
# the directory that contains this script
# should be in your PATH
#
# Hugo releases
# https://github.com/gohugoio/hugo/releases
# -----------------------

# -----------------------
# get OS, from
# https://stackoverflow.com/questions/3466166/how-to-check-if-running-in-cygwin-mac-or-linux
# detect three different OS types (GNU/Linux, Mac OS X, Windows NT
# -----------------------
if [ "$(uname)" == "Darwin" ]; then
    # Mac OS X platform
    relos="macOS-64"

elif [ "$(expr substr $(uname -s) 1 5)" == "Linux" ]; then
    # GNU/Linux platform
    relos="Linux-64"

elif [ "$(expr substr $(uname -s) 1 10)" == "MINGW32_NT" ]; then
    # 32 bits Windows NT platform
    relos="Windows-32"

elif [ "$(expr substr $(uname -s) 1 10)" == "MINGW64_NT" ]; then
    # 64 bits Windows NT platform
    relos="Windows-64"
fi


# param 1
if [ "$1" != "" ]; then

    parm1=$1
else
    echo "Enter a command, e.g., install, ls, use"
    read -p 'cmd: ' parm1
fi

# param 2
if [ "$2" != "" ]; then

    parm2=$2
else
    if [ "$2" == "install" ] || [ "$2" == "use" ]; then
        echo "Enter a version, e.g., 0.54.0"
        read -p 'ver: ' parm2
    fi
fi

# lcase using tr
parm1="$(echo $parm1 | tr '[A-Z]' '[a-z]')"

cd "$base"

function install {

    mkdir -p release/v$parm2
    
    if [ -d resources ]; then
        rm -r resources
    fi
        
    curl -L https://github.com/gohugoio/hugo/releases/download/v${parm2}/hugo_${parm2}_${relos}bit.tar.gz -o release/v$parm2/hugo_${relos}bit.tar.gz
    cd release/v$parm2

    tar -xvf hugo_${relos}bit.tar.gz -C $base
    
    cd "$base"
    hugo version 
}

function list {

    cd "$base/release"
    ls
}

function use {

    cd "$base"
    if [ -d release/v$parm2 ]; then

        cd release/v$parm2

        tar -xvf hugo_${relos}bit.tar.gz -C $base

        cd "$base"
        hugo version

    fi
}

# param 1 are commands like nvm
case "$1" in
    "install")
        # confirm
        read -p "install Hugo version $parm2 ? [y/n] " cont
        case "$cont" in
            y|Y )
                install
                ;;
            * )
                exit 0
                ;;
        esac
        ;;
    "ls")
        list
        ;;
    "use")
        use
        ;;
esac